Scaffold structure



July 6, 1965 F. H. wxcHsER 3,193,233

SCAFFOLD STRUCTURE Filed Feb. 5, 1964 INVENTOR. FRED H. W/CHSER J9 Arm/@Ney United States Patent O 3,193,233 SCAFFLD STRUCTURE Fred H. Wichser, Los Angeles, Calif., assigner to Angela Evalina Lincoln, Los Angeles, Calif. Filed Feb. 3, 1964, Ser. No. 341,925 2 Claims. (Ci. 24S-240.3)

This invention relates to a scaffold structure and deals more particularly with scaffold brackets for supporting workers and the material they are handling at different elevations on the walls of buildings and other such structures.

Such brackets are commonly used for mounting scaffolding which provides areas or platforms at desired elevations on industrial buildings, for instance. Among the many needs for such elevated platforms is in the construction of concrete walls, such scaffolding being moved upwardly, in stages, to enable workers to work on the walls.

Prior scaffold brackets have been characterized by undesirable weight and consequent unwieldiness greatly increasing the difficulty of moving the brackets from stage to stage. Moreover, such prior brackets are bulky and are uneconomical to ship from place to place since the same occupy space that could Well be utilized for transporting other correlated equipment.

Therefore, it is an object of the invention to provide a novel and improved scaffold bracket that has a construction which obviates the above faults, is much lighter in weight than the prior brackets and, moreover, is readily foldable to a space-saving and easily handled size and yet has strength and rigidity as required for such items.

Another object of the invention is to provide a lightweight and foldable scaffold bracket, as characterized above, that is easily afiixed to a Wall by means of a singlepoint -of connection, thereby greatly facilitating mounting and de-mounting the same for stage-by-stage removal and installation.

This invention also has for its objects to provide such means that are positive in operation, convenient in use, easily installed in a working position and easily disconnected therefrom, economical of manufacture, rela- -tively simple, and of general superiority and serviceability.

The invention also comprises novel details of construction and novel combinations and arrangements of parts, which will more fully appear in the course of the following description, and which is based on the accompanying drawing. However, said drawing merely shows, and the following description merely describes, one embodiment of the present invention, which is given by way of illustration or example only.

In the drawing, like reference characters designate similar parts in the several views.

FIG. l is a perspective view of a scaffold bracket according to the present invention in erected condition and shown in operative position connected to the timbers of a bracing structure.

FIG. 2 is an enlarged and partly broken front elevational view of said bracket.

FIG. 3 is a broken longitudinal sectional view showing the manner of connecting said bracket to the walls or similar timbers of a bracing structure.

FIG. 4 is a similar view showing the manner of connecting said bracket to a concrete wall where shee-bolts are available.

FIG. 5, to a reduced scale, is a side elevational view showing the bracket in partly folded condition, the view indicating the compact nature of the folded bracket relative to its erected form.

ananas Patented July 6, 1965 ice FIG. 6 is an enlarged cross-sectional view taken on the general plane of line 6-6 of FIG. 5 and as if the bracket parts were in fully rather than partly folded condition.

FIG. 1 shows the timbers of a bracing structure which includes Wales 10, upright studs 11 and 12, and cross timbers or beams 13, the scaffold bracket shown being adapted to be mounted on said wales 19 and connected to the 4stud 12 and beam 13, or, when shee-bolts 14 are available, being adapted to be mounted directly on a concrete wall 1S.

The present scaffold bracket comprises, generally, a channel 16 that constitutes a guard rail that, in operative position of the bracket, is horizontal, a vertical channel 17 that constitutes a wall stopper that is connected by a removable bolt 18 at its upper end to an end of the channel 16,v and a brace channel 19 connected by a bolt 2t) to the channel 16 and by a .bolt 21 to the channel 17, said three channels, when connected by said three bolts, as above, forming a triangle.

As can be seen in FIG. 6, the channel 16 is the Widest of the three and the brace channel 19 the narrowest, thereby enabling the three channels to be folded one into the other upon removal of the bolt 18, thereby providing an elongated and compact member that is easily handled for spacing-saving transportation. Y

Each channel 16 and 17 has an extension beyond the respective bolts 20 and 21, the respective collars or receptacles 22 and 23 being provided on said extensions, the former to receive the stud 12 and the latter the beam 13. In operative position of the bracket, nails or the like 24 may be used to tack said stud 12 and beam 13 to their respective collars.

The above-described bracket is provided with a toggle bolt 25 which is provided with a trunnion end 26 that s mounted'on 4the iianges 27 of a channel 28 affixed to the inside of the channel 17 adjacent the end thereof that is Aengaged with bolt 18. Said flanges 27 may be the lfianges of two edge-abutted angles. A slot 29 in the web of vthe channel 17 and in the overlying web of the channel 28 affords a space through which :the bolt 25 may be swung, as in FIG. 3, to extend rearwardly. Hence, said toggle bolt may be introduced between the wales 10 and when Iitted with a nut 39, applied from the rear of said wales, provides the means that mounts the erected bracket on the bracing or framing structure, as shown in FIGS. l and 3.

In cases where a slice-bolt is available, as the one shown at 14, the toggle bolt 25 is not used, since the shee-bolt may extend through an opening 31 above the slot 29, and a nut 32 applied thereon to clamp .fthe bracket to the wales 10 or even directly to the face of the wall 15 from which the shee-bolt extends.

When the bracket is to be folded, the bolt 1S is removed from the corner where the channels 16 and 17 are joined, and entered through the holes 33 in channel 16, and from which said bolt had been removed, through holes 34 in channel 17, and holes 35 in channel 19, all of which are in register when the three channels are folded and nested into each other, as in FIG. 6. Said bolt now serves to retain the folded condition of the parts, as contemplated above.

While the foregoing has illustrated and described what is now contemplated to be the best mode of carrying out the invention, the construction is, of course, subject to modification without departing from the spirit and scope of the invention. Therefore, it is not desired to restrict the invention to the particular form of construction illustrated and described, but to cover all modifications that may fall within the scope of the appended claims.

Having thus described this invention, what is claimed and desired to be secured by Letters Patent is:

1. A scaold bracket comprising:

(a) a rst channel,

(b) a second channel narrower than the irst channel and adapted to nest therein,

(c) a brace channel narrower than the second channel and adapted to nest therein, the second channel being fur-ther adapted to be attached to a structure,

(d) pivot bolts connecting the ends Vof the brace channel to the iirst and second channels to toldably connect the three channels,

(e) a removable bolt connecting the ends of the rst and second channels to arrange the threechannels in rigid, right-angle, triangular form with the brace channel forming the hypotenuse and the two other channels the two legs,

(f) the three channels, when said removable bolt is removed and when folded, being nested within the cross-sectional areal space of the rst channel, and the last-mentioned bolt extending through the three nested channels to lock the same together in their nested condition,

(g) the second channel, at the end of thereof adjacent to the point of connection by the removable bolt to the rst channel, being provided with a toggle bolt 4 for securing the bracket to a supporting structure with the second channel vertically disposed,

(h) flanges within the channel space of the secon channel mounting said toggle bolt, (i) said ilanges residing within the channel space of the brace channel, when the three channels are in nested condition,

(j) and the second channel having an elongated slot through which the toggle bolt is adapted to swing to assume bracket-mounting engagement with the supporting structure.

2. A scaffold bracket comprising:

(a) a rst channel,

(b) a second channel narrower than the first and adapted to nest therein,

(c) a brace channel narrower than the second channel and adapted to nest therein, the second channel being further adapted to be attached to a structure,

channel (d) pivot bolts connecting the ends of the brace channel to the tirst and second channels to foldably connect the three channels,

(e) a removable bolt connecting the ends of the rst and second channels to arrange the three channels in rigid, right-angle, triangular form with the brace channel forming the hypotenuse and the other two channels the two legs,

(-f) the three channels, when said removable bolt is removed and when folded, being nested within the cross-sectional areal space of the rst channel, and the last-mentioned bolt extending through the three nested channels to lock the sarne together in their nested condition,

(g) the second channel, at the end thereof adjacent to the point of connection by the removable bolt to the rst channel, being provided with a toggle bolt for securing the bracket to a supporting structure with the second channel vertically disposed,

(h) flanges within the channel space of the second channel mounting said toggle bolt,

(i) said ilanges residing within the channel space of the brace channel, when the three channels are in nested condition,

(j) and the second channel having an elongated slot through which the toggle bol-t is adapted to swing to assume the bracket-mounting engagement with the supporting structure,

(k) 'the toggle bolt being provided with trunnions engaged in the mentioned Vflanges to hold the bolt in operative swingable position in the space between the ilanges.

References Cited by the Examiner UNITED STATES PATENTS 425,182 4/90 Maxim `248--2403 446,802 2/9l Vliet 24S-240.3 854,163 V 5 07 Haskell 24S-240.3 12,670,248 2/54 Heller 248-235 2,916,245 1'2/ 59 Williams 248-242 3,119,590 1/64 Eriksson 24S-240.3

CLAUDE A. LE ROY, Primary Examiner. FRANK L. ABBOTT, Exrzmiin'er. 

1. A SCAFFOLD BRACKET COMPRISING: (A) A FIRST CHANNEL, (B) A SECOND CHANNEL NARROWER THAN THE FIRST CHANNEL AND ADAPTED TO NEST THEREIN, (C) A BRACE CHANNEL NARROWER THAN THE SECOND CHANNEL AND ADAPTED TO NEST THEREIN, THE SECOND CHANNEL BEING FURTHER ADAPTED TO BE ATTACHED TO STRUCTURE, (D) PIVOT BOLTS CONNECTING THE ENDS OF THE BRACE CHANNEL TO THE FIRST AND SECOND CHANNELS TO FOLDABLY CONNECT THE THREE CHANNELS, (E) A REMOVABLE BOLT CONNECTING THE ENDS OF THE FIRST AND SECOND CHANNELS TO ARRANGED THE THREE CHANNELS IN RIGID, RIGHT-ANGLE, TRIANGULAR FORM WITH THE BRACE CHANNELS FORMING THE HYPOTENUSE AND THE TWO OTHER CHANNELS THE TWO LEGS, (F) THE THREE CHANNELS, WHEN SAID REMOVABLE BOLT IS REMOVED AND WHEN FOLDED, BEING NESTED WITHIN THE CROSS-SECTIONAL AREAL SPACE OF THE FIRST CHANNEL, AND THE LAST-MENTIONED BOLT EXTENDING THROUGH THE THREE NESTED CHANNELS TO LOCK THE SAME TOGETHER, IN THEIR NESTED CONDITION, (G) THE SECONC CHANNEL, AT THE END OF THEREOF ADJACENT TO THE POINT OF CONNECTION BY THE REMOVABLE BOLT TO THE FIRST CHANNEL, BEING PROVIDED WITH A TOGGLE BOLT FOR SECURING THE BRACKET TO A SUPPORTING STRUCTURE WITH THE SECOND CHANNEL VERTICAL DISPOSED, (H) FLANGES WITHIN THE CHANNEL SPACE OF THE SECOND CHANNEL MOUNTING SAID TOGGLE BOLT, (I) SAID FLANGES RESIDING WITHIN THE CHANNEL SPACE OF THE BRACE CHANNEL, WHEN THE THREE CHANNELS ARE IN NESTED CONDITION, (J) AND THE SECOND CHANNEL HAVING AN ELONGATED SLOT THROUGH WHICH THE TOGGLE BOLT IS ADAPTED TO SWING TO ASSUME BRACKET-MOUNTING ENGAGEMENT WITH THE SUPPORTING STRUCTURE. 